com/android/server/biometrics/sensors/fingerprint/hidl/FingerprintRemovalClient.java

/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.server.biometrics.sensors.fingerprint.hidl;

import android.annotation.NonNull;
import android.content.Context;
import android.hardware.biometrics.BiometricsProtoEnums;
import android.hardware.biometrics.fingerprint.V2_1.IBiometricsFingerprint;
import android.hardware.fingerprint.Fingerprint;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Slog;

import com.android.server.biometrics.sensors.BiometricUtils;
import com.android.server.biometrics.sensors.ClientMonitorCallbackConverter;
import com.android.server.biometrics.sensors.RemovalClient;

import java.util.Map;

/**
 * Fingerprint-specific removal client supporting the
 * {@link android.hardware.biometrics.fingerprint.V2_1} and
 * {@link android.hardware.biometrics.fingerprint.V2_2} HIDL interfaces.
 */
class FingerprintRemovalClient extends RemovalClient<Fingerprint, IBiometricsFingerprint> {
    private static final String TAG = "FingerprintRemovalClient";

    private final int mBiometricId;

    FingerprintRemovalClient(@NonNull Context context,
            @NonNull LazyDaemon<IBiometricsFingerprint> lazyDaemon, @NonNull IBinder token,
            @NonNull ClientMonitorCallbackConverter listener, int biometricId, int userId,
            @NonNull String owner, @NonNull BiometricUtils<Fingerprint> utils, int sensorId,
            @NonNull Map<Integer, Long> authenticatorIds) {
        super(context, lazyDaemon, token, listener, userId, owner, utils, sensorId,
                authenticatorIds, BiometricsProtoEnums.MODALITY_FINGERPRINT);
        mBiometricId = biometricId;
    }

    @Override
    protected void startHalOperation() {
        try {
            // GroupId was never used. In fact, groupId is always the same as userId.
            getFreshDaemon().remove(getTargetUserId(), mBiometricId);
        } catch (RemoteException e) {
            Slog.e(TAG, "Remote exception when requesting remove", e);
            mCallback.onClientFinished(this, false /* success */);
        }
    }
}